BER analysis in AWGN and rayleigh fading channel with variant modulation and temperature

This paper addresses and highlights the drawback of communication systems which is mainly suffer from signal attenuation and spectrum fading and it is because of the diverse mobility factor associated with it. The Orthogonal Frequency Division Multiplexing (OFDM) is determined as a multicarrier system that is able to achieve high efficiency in terms of spectral efficiency. Multiple Input Multiple Output (MIMO) arrangement gives upgraded limit the same transmits power. The combinations of OFDM and MIMO have the ability to increase diversity gain and the capacity of the system in time variant and frequency variant channels. MIMO-OFDM arrangement is found to perform better against multi-way fading and the differing channel conditions, than the previous methods. Precoding is another strategy that can be connected which enhances the execution of a MIMO OFDM framework. In this dissertation, the BER performance has been analyzed of a MIMO-OFDM framework utilizing precoding is recreated for Quadrature amplitude modulation (QAM). 16-QAM to 128-QAM has been considered for regulation configurations. The main aim of this dissertation is to demonstrate the data with the considerable change in temperature.